My dad has PD. i am 39 and have been having bad gastro problems, serious brain fog, fatigue and sweating easily when its hot and bad anxiety. This has been goung in for about 5 years now. I have every test possible by a gastro doc and family doc and they cant find anything excot some liw vitamin b levels. Isthere a test a neurologist can do to see if i may possibly have young onset PD? I have NO tremors. Thanks